/Python/Add column to df from another df

Add column to df from another df

How to add a column to a pandas df

#using the insert function:
df.insert(location, column_name, list_of_values) 
#example
df.insert(0, 'new_column', ['a','b','c'])
#explanation:
#put "new_column" as first column of the dataframe
#and puts 'a','b' and 'c' as values

#using array-like access:
df['new_column_name'] = value

#df stands for dataframe

Add column to df from another df

# pre 0.24
feature_file_df['RESULT'] = RESULT_df['RESULT'].values
# >= 0.24
feature_file_df['RESULT'] = RESULT_df['RESULT'].to_numpy()

Source: stackoverflow.com

Similar codes

2 votes272 views1 answer
Filter by row contains pandas
Python
0 vote279 views1 answer
R Return each result with an index
Python
1 vote274 views1 answer
The Python package manager (pip) can only be used from outside of IPython.
Python
2 votes272 views2 answers
Install ide python ubuntu
Python
57 votes266 views6 answers
Int to string python
Python
3 votes276 views6 answers
Django login
Python
0 vote287 views1 answer
Python plot draw the goal line
Python
10 votes278 views6 answers
Django create user
Python
0 vote293 views1 answer
Plot bar chart python with resulting numbers
Python
0 vote286 views1 answer
How to define piecewise function i python
Python